Leaf curl and dying leaves
Newbie here trying out hydroponics as a hobby. I'm growing 3 basil plants and three hot pepper trinidad scorpion plants inside of a hybrid aeroponic/dwc setup that I built.
Leaves curling up, this has been happening for at least 3 weeks and now lower leaves are starting to die. One of the trinidad scorpion plants leaves are twisted as well.
Nutrients: General Hydroponics Flora Series
Light: 90W LED Grow Light Lighthouse
Water: 5 gallons of RO water that is around 300 PPM before I ad nutes
Temp: around 70-73
I've only fertilized twice, once after about two weeks which was very weak 12.5 ml of each nutrient and then three weeks later which was also very weak. I was thinking I should change the res every week but wanted to see if I could get away with a longer time between changes to save on nutrient cost.
Oddly I haven't added any water since I changed the water about three weeks ago, it doesn't look like a lot has been used.
PH is good, I check every other day, the first week it was a little off now and then but now it's always on target. Usually stays around 5.8
I also attached a pic of a basil plant when it was only 2 weeks old when the leaf curl started.
Any tips or help would be appreciated!
Here is a link that might be useful: Video of leaf curl